Code in Haskell Please

Write a function matches that uses list comprehension to pick out all instances of an integer n from a list. matches : : Integer [Integer ] [Integer] Example usage: matches 1[1,3,8,1] should return [1,1] matches 1[6,7,9] should return [] Use the matches function in the above problem to write a function that uses list comprehension to return True if an element is a member of a list, False otherwise. (You may not use the elem function that is already defined in Haskell.)